BPG致力于知识的发现和传播
Total Visits of This Article
2021 | 总访问次数
排名 国家/地区 数量 占比
1 China 219 55.6%
2 United States 101 25.6%
3 Canada 28 7.1%
4 Germany 27 6.9%
5 Hong Kong 4 1%
6 Russia 3 0.8%
7 Taiwan 3 0.8%
8 Spain 2 0.5%
9 Sweden 2 0.5%
10 Macao 2 0.5%
11 Netherlands 1 0.3%
12 Bulgaria 1 0.3%
13 Ukraine 1 0.3%